src/gallium/drivers/nv50/nv50_miptree.c

   1 /*
   2  * Copyright 2008 Ben Skeggs
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice shall be included in
  12  * all copies or substantial portions of the Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17  * THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
  18  * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
  19  * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  20  * SOFTWARE.
  21  */
  22
  23 #include "pipe/p_state.h"
  24 #include "pipe/p_defines.h"
  25 #include "pipe/p_inlines.h"
  26
  27 #include "nv50_context.h"
  28
  29 static struct pipe_texture *
  30 nv50_miptree_create(struct pipe_screen *pscreen, const struct pipe_texture *tmp)
  31 {
  32         struct nouveau_device *dev = nouveau_screen(pscreen)->device;
  33         struct nv50_miptree *mt = CALLOC_STRUCT(nv50_miptree);
  34         struct pipe_texture *pt = &mt->base;
  35         unsigned width = tmp->width[0], height = tmp->height[0];
  36         unsigned depth = tmp->depth[0];
  37         uint32_t tile_mode, tile_flags, tile_h;
  38         int ret, i, l;
  39
  40         mt->base = *tmp;
  41         pipe_reference_init(&mt->base.reference, 1);
  42         mt->base.screen = pscreen;
  43
  44         switch (pt->format) {
  45         case PIPE_FORMAT_Z24S8_UNORM:
  46         case PIPE_FORMAT_Z16_UNORM:
  47                 tile_flags = 0x2800;
  48                 break;
  49         default:
  50                 tile_flags = 0x7000;
  51                 break;
  52         }
  53
  54         if      (pt->height[0] > 32) tile_mode = 4;
  55         else if (pt->height[0] > 16) tile_mode = 3;
  56         else if (pt->height[0] >  8) tile_mode = 2;
  57         else if (pt->height[0] >  4) tile_mode = 1;
  58         else                         tile_mode = 0;
  59         tile_h = 1 << (tile_mode + 2);
  60
  61         switch (pt->target) {
  62         case PIPE_TEXTURE_3D:
  63                 mt->image_nr = pt->depth[0];
  64                 break;
  65         case PIPE_TEXTURE_CUBE:
  66                 mt->image_nr = 6;
  67                 break;
  68         default:
  69                 mt->image_nr = 1;
  70                 break;
  71         }
  72
  73         for (l = 0; l <= pt->last_level; l++) {
  74                 struct nv50_miptree_level *lvl = &mt->level[l];
  75
  76                 pt->width[l] = width;
  77                 pt->height[l] = height;
  78                 pt->depth[l] = depth;
  79                 pt->nblocksx[l] = pf_get_nblocksx(&pt->block, width);
  80                 pt->nblocksy[l] = pf_get_nblocksy(&pt->block, height);
  81
  82                 lvl->image_offset = CALLOC(mt->image_nr, sizeof(int));
  83                 lvl->pitch = align(pt->width[l] * pt->block.size, 64);
  84
  85                 width = MAX2(1, width >> 1);
  86                 height = MAX2(1, height >> 1);
  87                 depth = MAX2(1, depth >> 1);
  88         }
  89
  90         for (i = 0; i < mt->image_nr; i++) {
  91                 for (l = 0; l <= pt->last_level; l++) {
  92                         struct nv50_miptree_level *lvl = &mt->level[l];
  93                         int size;
  94
  95                         size  = align(pt->width[l], 8) * pt->block.size;
  96                         size  = align(size, 64);
  97                         size *= align(pt->height[l], tile_h) * pt->block.size;
  98
  99                         lvl->image_offset[i] = mt->total_size;
 100
 101                         mt->total_size += size;
 102                 }
 103         }
 104
 105         ret = nouveau_bo_new_tile(dev, NOUVEAU_BO_VRAM, 256, mt->total_size,
 106                                   tile_mode, tile_flags, &mt->bo);
 107         if (ret) {
 108                 FREE(mt);
 109                 return NULL;
 110         }
 111
 112         return &mt->base;
 113 }
 114
 115 static struct pipe_texture *
 116 nv50_miptree_blanket(struct pipe_screen *pscreen, const struct pipe_texture *pt,
 117                      const unsigned *stride, struct pipe_buffer *pb)
 118 {
 119         struct nouveau_bo *bo = nouveau_bo(pb);
 120         struct nv50_miptree *mt;
 121
 122         /* Only supports 2D, non-mipmapped textures for the moment */
 123         if (pt->target != PIPE_TEXTURE_2D || pt->last_level != 0 ||
 124             pt->depth[0] != 1)
 125                 return NULL;
 126
 127         mt = CALLOC_STRUCT(nv50_miptree);
 128         if (!mt)
 129                 return NULL;
 130
 131         mt->base = *pt;
 132         pipe_reference_init(&mt->base.reference, 1);
 133         mt->base.screen = pscreen;
 134         mt->image_nr = 1;
 135         mt->level[0].pitch = *stride;
 136         mt->level[0].image_offset = CALLOC(1, sizeof(unsigned));
 137
 138         nouveau_bo_ref(bo, &mt->bo);
 139         return &mt->base;
 140 }
 141
 142 static void
 143 nv50_miptree_destroy(struct pipe_texture *pt)
 144 {
 145         struct nv50_miptree *mt = nv50_miptree(pt);
 146
 147         nouveau_bo_ref(NULL, &mt->bo);
 148         FREE(mt);
 149 }
 150
 151 static struct pipe_surface *
 152 nv50_miptree_surface_new(struct pipe_screen *pscreen, struct pipe_texture *pt,
 153                          unsigned face, unsigned level, unsigned zslice,
 154                          unsigned flags)
 155 {
 156         struct nv50_miptree *mt = nv50_miptree(pt);
 157         struct nv50_miptree_level *lvl = &mt->level[level];
 158         struct pipe_surface *ps;
 159         int img;
 160
 161         if (pt->target == PIPE_TEXTURE_CUBE)
 162                 img = face;
 163         else
 164         if (pt->target == PIPE_TEXTURE_3D)
 165                 img = zslice;
 166         else
 167                 img = 0;
 168
 169         ps = CALLOC_STRUCT(pipe_surface);
 170         if (!ps)
 171                 return NULL;
 172         pipe_texture_reference(&ps->texture, pt);
 173         ps->format = pt->format;
 174         ps->width = pt->width[level];
 175         ps->height = pt->height[level];
 176         ps->usage = flags;
 177         pipe_reference_init(&ps->reference, 1);
 178         ps->face = face;
 179         ps->level = level;
 180         ps->zslice = zslice;
 181         ps->offset = lvl->image_offset[img];
 182
 183         return ps;
 184 }
 185
 186 static void
 187 nv50_miptree_surface_del(struct pipe_surface *ps)
 188 {
 189         struct nv50_surface *s = nv50_surface(ps);
 190
 191         pipe_texture_reference(&ps->texture, NULL);
 192         FREE(s);
 193 }
 194
 195 void
 196 nv50_screen_init_miptree_functions(struct pipe_screen *pscreen)
 197 {
 198         pscreen->texture_create = nv50_miptree_create;
 199         pscreen->texture_blanket = nv50_miptree_blanket;
 200         pscreen->texture_destroy = nv50_miptree_destroy;
 201         pscreen->get_tex_surface = nv50_miptree_surface_new;
 202         pscreen->tex_surface_destroy = nv50_miptree_surface_del;
 203 }
 204